Highly stable nanostructured membrane electrode assembly based on Pt/Nb2O5 nanobelts with reduced platinum loading for proton exchange membrane fuel cells
Highly stable nanostructured membrane electrode assembly based on Pt/Nb2O5 nanobelts with reduced platinum loading for proton exchange membrane fuel cells
复制标题
基于 Pt/Nb2O5 纳米带的高度稳定的纳米结构膜电极组件，减少铂负载，用于质子交换膜燃料电池
DOI：
10.1039/c7nr01491k
复制
发表时间：
2017
期刊：
影响因子：
6.7
通讯作者：
Yi Baolian
中科院分区：
文献类型：
--
作者：
Zeng Yachao;Guo Xiaoqian;Wang Zhiqiang;Geng Jiangtao;Zhang Hongjie;Song Wei;Yu Hongmei;Shao Zhigang;Yi Baolian
质子交换膜燃料电池是下一代电源的理想选择，但其耐久性差和成本高阻碍了其广泛应用。为了解决这一难题，通过水热合成和物理气相沉积方法构建了基于Pt/Nb 2 O 5纳米带的纳米结构膜电极组件。Pt/Nb_2O_5纳米棒直接与Nafion膜对准，而不使用离聚物作为粘合剂。所制备的催化剂层是多孔的并且具有超低Pt负载。通过Pt/Nb 2 O 5 NBs基MEA（66.0 μgPt cm−2）实现了5.80 kW gPt−1（阴极）和12.03 kW gPt−1（阳极）的单电池性能。加速耐久性测试表明，Pt/Nb 2 O 5 NBS基MEA比常规Pt/C基MEA稳定得多。
Proton exchange membrane fuel cells are promising candidates for the next-generation power sources; however, poor durability and high cost impede their widespread application. To address this dilemma, a nanostructured membrane electrode assembly (MEA) based on Pt/Nb2O5 nanobelts (NBs) was constructed through hydrothermal synthesis and the physical vapour deposition method. Pt/Nb2O5 NBs were directly aligned with Nafion membrane without ionomer as a binder. The prepared catalyst layer is ultrathin and has ultralow Pt loading. A single cell performance of 5.80 kW gPt−1 (cathode) and 12.03 kW gPt−1 (anode) was achieved by the Pt/Nb2O5 NBs-based MEA (66.0 μgPt cm−2). The accelerated durability test indicates that the Pt/Nb2O5 NBs-based MEA is far more stable than conventional Pt/C-based MEA.